Time in Mexico

Mexico City and the majority of Mexico operate on Central Standard Time (CST), which is UTC-6 year-round. This is the same as US Central Standard Time during winter months. However, there is a critical difference: Mexico abolished daylight saving time in October 2022, meaning Mexican clocks no longer spring forward.

Prior to the 2022 reform, Mexico City observed DST on the same schedule as the United States, moving to UTC-5 (CDT) during summer months. Since the abolition, Mexico City remains fixed at UTC-6 throughout the year. This creates a seasonal gap with US cities that still observe DST.

Mexico is a large country spanning four time zones from east to west. Most of the population — including Mexico City, Guadalajara, Monterrey, and Puebla — lives in the Zona Centro (UTC-6). The eastern resort area around Cancún operates on Zona Sureste (UTC-5), while the Pacific coast and Baja California use UTC-7 and UTC-8 respectively.

The 2022 DST abolition was a significant change that affects anyone scheduling meetings, flights, or calls between Mexico and the United States. The key point to remember: during US summer, Mexico City is one hour behind cities in the US Central time zone, even though they share the same standard time offset. Visit our World Clock for live times across all Mexican zones.

Understanding the Mexico-US time relationship requires knowing that Mexico City stays at UTC-6 year-round, while most US cities shift forward one hour during daylight saving time (March–November). This creates two distinct periods with different offsets.

During US Standard Time (November–March):

During US Daylight Saving Time (March–November):

The key surprise for many Americans: during US winter, Mexico City and Chicago show the exact same time. But during US summer, Chicago springs forward to CDT (UTC-5) while Mexico City stays at CST (UTC-6), opening a one-hour gap. This is the most common source of scheduling confusion between the two countries since the 2022 DST abolition.

For live Chicago time, check our Chicago time zone page.

Mexico spans four official time zones from east to west. Since the 2022 DST abolition, all four zones maintain fixed offsets year-round — with one important exception for northern border cities.

The border exception: Northern border municipalities in states like Tamaulipas, Coahuila, Nuevo León, and Chihuahua that share a border with the United States are exempt from the DST abolition. These cities — including Tijuana, Ciudad Juárez, Nuevo Laredo, and Reynosa — continue to observe US-style daylight saving time to maintain synchronization with their American twin cities across the border.

This means Tijuana follows the same clock as San Diego year-round, and Ciudad Juárez matches El Paso. The practical result is that driving from Mexico City to Tijuana can involve crossing not just time zone boundaries but also DST policy boundaries, depending on the season.

Cancún's unique position: The Zona Sureste (UTC-5) is permanently aligned with US Eastern Standard Time. This means Cancún is always the same time as New York during winter, but one hour behind New York during US summer. For American tourists visiting Cancún from the East Coast, this is a minimal adjustment.

In October 2022, Mexico's Congress passed a reform eliminating daylight saving time for most of the country. The decision, championed by President López Obrador, ended over two decades of clock-changing that had been unpopular with a significant portion of the Mexican public.

Key reasons behind the abolition:

Public health concerns: Mexican health officials cited research linking the biannual clock change to sleep disruption, increased heart attack risk in the days following the spring-forward transition, and general public discomfort. The WHO and various medical associations have published similar findings, lending scientific weight to the argument.

Minimal energy savings: The original justification for DST in Mexico — introduced in 1996 — was energy conservation. However, studies by Mexico's energy commission (CONUEE) found that actual savings were negligible. Modern air conditioning usage, which increases during longer daylight evenings, offset any lighting-related savings. The cost-benefit analysis no longer favored DST.

Public unpopularity: Polls consistently showed that a majority of Mexicans disliked the clock change. The disruption to daily routines, school schedules, and work-life balance was a frequent complaint. Politicians recognized that abolishing DST was a popular move with voters.

Border city exemption: The reform pragmatically exempted northern border municipalities. Cities like Tijuana, Ciudad Juárez, and Reynosa rely heavily on cross-border commerce with their US counterparts. Keeping these cities synchronized with US DST schedules avoids logistical chaos for the millions of people and goods crossing the border daily.

The practical impact for Americans: if you have been scheduling calls with Mexico City contacts assuming they follow US DST, you need to update your assumptions. During US summer, Mexico City is now one hour behind where it used to be relative to US Central time.

Mexico City (CDMX) is the economic, political, and cultural heart of Mexico. With a metropolitan population exceeding 22 million, it is one of the largest cities in the Western Hemisphere and a major business destination for US companies.

Mexico City business schedule:

The comida — the main meal of the day — is a defining feature of Mexican business culture. Unlike a quick American lunch, the comida is often a substantial two-hour affair between 14:00 and 16:00. Business lunches are common and can be crucial for relationship-building. Do not schedule important calls during this window if you want your Mexican counterparts fully available.

Mexico City's GDP represents roughly 17% of Mexico's total economic output. The city is a major hub for finance, media, technology, and manufacturing management. US companies with Mexican operations frequently base their headquarters in the Polanco, Santa Fe, or Reforma neighborhoods.

The city's altitude (2,240 meters / 7,350 feet above sea level) gives it a temperate climate year-round, with temperatures rarely exceeding 28°C (82°F) even in summer. This pleasant climate contributes to an active outdoor culture, with weekend visits to parks like Chapultepec and Coyoacán being standard family activities.

Calling Mexico from the US is straightforward thanks to the close time zone alignment, but the 2022 DST abolition means you need to account for seasonal differences that did not exist before.

For Mexico City (UTC-6 year-round):

US Winter (November–March) — identical to US Central:

US Summer (March–November) — Mexico City is 1h behind US Central:

Best calling window: For Mexico City, aim for 09:00–15:00 Mexico City time, avoiding the comida lunch period (14:00–16:00) for important calls. During US winter, this perfectly overlaps with US Central business hours. During US summer, this translates to 10:00–16:00 CDT or 11:00–17:00 EDT.

For Cancún (UTC-5 year-round): Cancún matches US Eastern Standard Time permanently. During US winter, Cancún and New York show the same clock. During US summer, Cancún is one hour behind New York.

For Caribbean and Latin American time comparisons, also see our time in Cuba and time in Brazil pages. Check our World Clock for a full overview.